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Patients with the blood disorder can experience severe pain. But when they arrive at the emergency room seeking help, health care personnel often think their requests for narcotics are a sign of addiction. Nursing professor Paula Tanabe is helping to illuminate the problem and improve treatment.

Twitter launches Vine, a video-sharing app that allows users to post succinct videos directly onto tweets. The app is reminiscent of Instagram and seems familiar at a time when animated GIFs are all the rage.

You may find it mesmerizing as cold air covers much of the nation in a new video visualization from the National Oceanic and Atmospheric Administration.

TenneSEA and CaribbeanSEA are hosting a brand new event at The Barn Nursery to benefit clean water programs in the region and locations around the world.…

There were an estimated 367,000 new homes sold last year, up 19.9 percent from the 306,000 sold in 2011. The dip in December isn't being seen as a sign that the recovery has gone off track.

Botanists say the image on the new $20 bills is the leaf of a Norway maple, not the familiar sugar maple that graces Canada's flag. The Bank of Canada defends the image, saying it's a "stylized blend" of leaves from various maples.

Meet the new Dutch master: Tjalf Sparnaay's food paintings are so gobsmacking in their level of detail, it's hard to resist the temptation to pick one up and take a bite.

Top aide Denis McDonough is moving into the chief of staff's office. Justice Department official Lisa Monaco is taking on the counterterrorism post.

Putting guns in schools may make people think more of Terminator than teaching. But Emily Richmond of the National Education Writers Association says that it's time to step back from the hysteria. She talks to host Michel Martin about practical ways to make schools safer.

Many of the anti-abortion activists were brought to Washington by their religious beliefs. The once-presidential candidate Rick Santorum addressed the crowd and shared his own decision to "choose life."